The same Apple account receives different SMS messages on different devices.

Using different icloud on two iphone devices can't synchronize text messages or address books. To sync text messages or address books on two iphone, you must use the same iCloud account. The synchronization operation is as follows: Step 1: Click the "Settings" icon on the desktop. Step 2: Open "icloud". Step 3: Two iphone devices log in to the same iCloud account. Step 4: Click "Backup". Step 5: Turn on the "icloud Cloud Backup" option. Step 6: The other device still turns on the "icloud Cloud Backup" option. On the icloud interface, just turn on the "Address Book" option. ICloud is a private cloud space provided by Apple for Apple users, which is convenient for Apple users to share personal data between different devices. ICloud supports user devices to push data wirelessly, which is simpler than Apple's traditional iTunes solution (which requires a data cable connection) and has a better user experience.